[D8020ZBD], Letter from Albert Prescott Marble to Thomas Alva Edison, February 2nd, 1880

Item

Abstract

Get perfect vacuum by filling bulb with mercury, then evacuating. If necessary, support filament by tinfoil which will melt. Marg: "that will not make a vac that will amt to anything. Carbon horseshoe is flexible as paper & dont require tinf."

Date

1880-02-02

Decade

1880-1889

Type

Identifier

D8020ZBD

Folder Set

D8020

Title

[D8020ZBD], Letter from Albert Prescott Marble to Thomas Alva Edison, February 2nd, 1880

Microfilm ID

53:647

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University